Physics MCQ Test Series and Practice Questions on Gravitation

Syllabus: Kepler’s laws of planetary
motion. Laws of Gravitation - the universal law of gravitation. Acceleration
due to gravity and its variation with altitude and depth. Gravitational Forces.
Gravitational
potential energy and Field; Escape velocity, orbital velocity of a satellite.
Geostationary satellites. Motion of planets
and satellites in circular orbits.

Physics Practice Questions MCQs: Gravitation

Multiple Choice Questions (MCQs)
– Set 2 (Q. No. 11 - 20)

Question
11: If a planet consists of a satellite whose mass and radius were both half
that of the earth, the acceleration due to gravity at its surface would be:

Question
12: Which of the following graphs between the square of the time period and
cube of the distance of the planet from the sun is correct?

Question
13: Force of gravity is least at

a.
The equator

b.
The poles

c.
A point in between equator and any pole

d.
None of these

Question
14: Which of the following is the evidence to show that there must be a force
acting on earth and directed towards the sun?

a.
Deviation of falling bodies towards east

b.
Revolution of the earth around the sun

c.
Apparent motion of the sun round the earth

d.
Phenomenon of day and night

Question
15: A particle of mass ‘m’ is kept at rest at a height 3R from the surface of
earth, where ‘R’ is radius of earth and ‘M’ is mass of earth. The minimum speed
with which it should be projected, so that it does not return back, is -

(g
is acceleration due to gravity on the surface of earth)

Question
16: For a satellite in elliptical orbit which of the following quantities does
not remain constant:

a.
Angular momentum b. Momentum c. Areal velocity d. Total energy

Question
18: The acceleration due to gravity at pole and equator can be related as –